Critical Vulnerabilities in Python2.7 Package: Security Flaws Exposed
Summary
USN-7015-5: python2.7 vulnerabilities. Affects python2.7 versions < 2.7.6-8ubuntu0.6+esm21. Fixed in 2.7.6-8ubuntu0.6+esm21. How to fix ↓
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Background
Python2.7 is a widely used programming language known for its simplicity and versatility. It supports various programming paradigms and is utilized in web development, data analysis, artificial intelligence, and more. However, recent vulnerabilities have been identified that could expose applications using this version to significant security risks.
Vulnerability Detail
The vulnerabilities stem from several issues within the Python email and tarfile modules. Specifically, the email module improperly parses email addresses with special characters, allowing potential bypass of security mechanisms. Additionally, excessive backtracking in tarfile header parsing can lead to denial of service attacks. Other issues include incorrect handling of newlines in email headers and parsing cookies in the http.cookies module, which can also result in resource exhaustion. These vulnerabilities could allow remote attackers to exploit affected systems, leading to unauthorized access or service disruptions.
How To Fix
Minimum fixed version
2.7.6-8ubuntu0.6+esm21
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python2.7Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, consider restricting access to the affected services or implementing additional input validation to mitigate the risk of exploitation until the package can be updated.
Conclusion
The vulnerabilities identified in the Python2.7 package pose significant risks to applications using this version. It is crucial to update to the latest patched version to mitigate these risks. Utilizing tools like Vulert can further enhance your security posture by providing real-time monitoring for vulnerabilities.
See every vulnerability recorded for python2.7 →
FAQ
The main vulnerabilities include improper parsing of email addresses, excessive backtracking in tarfile headers, and incorrect handling of newlines and cookies, which can lead to denial of service attacks.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected without needing to sign up.
If immediate updates are not possible, implement input validation and restrict access to the affected services as a temporary workaround.
While specific exploits may not be publicly available, the vulnerabilities allow for potential denial of service and unauthorized access, making them critical to address.
Vulert is a tool that monitors open-source vulnerabilities in your software using a manifest file like package-lock.json. It provides real-time alerts for any vulnerabilities detected.
References
Related vulnerabilities
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